JP2017159057A - Warm air dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a warm air dryer which can be returned to a warm air mode by switching operation of either a cool air switch or a mode changeover switch.SOLUTION: Operation modes of a warm air dryer comprise a warm air mode for feeding warm air by driving of a motor 5 and a heater 6, and a cool air mode for feeding cool air by driving of only the motor 5. The warm air modes comprise a plurality of warm air modes having different warm air temperatures. A plurality of warm air mode indicators are provided that correspond to the respective warm air modes. A mode change switch 9 can switch among the plurality of warm air modes. In the plurality of warm air modes, when a cool air switch 13 is turned on, a mode is switched to a cool air mode. In the cool air mode, when the cool air switch 13 or the mode change switch 9 is turned on, the mode can be switched to the warm air mode.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a warm air dryer provided with a blower fan and a heater.

  A hair dryer (hot air dryer) provided with this type of blower fan and heater is known, for example, from Patent Document 1. There, a phase control circuit is provided between both terminals of the changeover switch, and the junction of the variable resistance of the phase control circuit and the capacitor is connected to the common terminal via a resistance for changing the conduction angle of the triac. The motor and heater of the blower fan are connected in parallel to the phase control circuit. When the previous changeover switch is switched to one side and the phase control circuit is connected to the parallel circuit of the motor and heater, the motor rotates by operating the variable resistor in the state of supplying hot air at a constant temperature. By adjusting the number, the amount of warm air can be changed steplessly between light and strong winds. Also, when the previous changeover switch is switched to the other side and the phase control circuit is connected to the heater side, the heating value of the heater can be reduced from zero by operating the variable resistor when the supply air volume of the blower fan is constant. The hot air temperature can be adjusted steplessly up to the maximum value.

Japanese Utility Model Publication No. 56-2883 (page 1, right column, lines 18 to 35, Fig. 1)

  According to the hair dryer disclosed in Patent Document 1, by switching the changeover switch, the amount of warm air can be changed steplessly in a state where warm air of a constant temperature is being fed, or a constant amount of warm air is fed. The amount of heat generated by the heater can be changed steplessly in the running state.

  An object of the present invention is to provide a hot air dryer that can be returned to the hot air mode by operating either a cold air switch or a mode changeover switch.

  In the hot air dryer according to the present invention, a main body case 1 is provided with a blower fan 4, a motor 5 that rotationally drives the fan 4, and a heater 6 that heats air supplied from the blower fan 4. The operation mode of the hot air dryer includes a hot air mode in which the motor 5 and the heater 6 are driven to supply hot air, and a cold air mode in which only the motor 5 is driven to supply cold air. On the outer surface of the main body case 1, there are provided hot air mode display bodies 31 to 34 that emit light in the warm air mode and a cold air mode display body 35 that emits light in the cold air mode. The hot air mode includes a plurality of hot air modes having different hot air temperatures. Corresponding to each hot air mode, a plurality of hot air mode display bodies 31 to 34 are provided. The mode switch 9 can switch between a plurality of hot air modes. In a plurality of hot air modes, the cool air switch 13 is turned on to switch to the cold air mode. When the cold air switch 13 is turned on in the cold air mode or the mode switching switch 9 is turned on, the hot air mode can be switched.

  In the hot air dryer according to the present invention, the mode changeover switch 9 and the cold air switch 13 for switching the hot air dryer operating in the hot air mode to the cold air mode are separated from the case structure comprising the main body case 1 and the handle 3. It is arranged at the position.

  In the hot air dryer according to the present invention, the hot air mode display bodies 31 to 34, the cold air mode display body 35, and the mode switching switch 9 are disposed in the main body case 1, and the cold air switch 13 is disposed in the handle 3. .

  In the hot air dryer according to the present invention, a plurality of hot air mode display bodies 31 to 34 and a cold air mode display body 35 are arranged in a straight line.

  In the hot air dryer according to the present invention, the cold air mode display body 35 is disposed between the hot air mode display bodies 31 to 34 and the mode changeover switch 9, and the hot air mode display bodies 31 to 34 and the cold air mode display body are arranged. 35 and the mode switch 9 are arranged in a straight line.

  The main body case 1 has a blower fan 4, a motor 5 that rotationally drives the fan 4, a heater 6 that heats air supplied from the blower fan 4, and a control unit 29 that controls the operating state of the motor 5 and the heater 6. Is provided. The controller 29 receives the detection signal of the temperature sensor 25 that detects the temperature of the hot air heated by the heater 6 and the adjustment signal of the controller 12 that adjusts the heat output of the heater 6 to drive the motor 5 and the heater 6. Control the state. Specifically, the control unit 29 can adjust the heat output of the heater 6 according to the adjustment signal output from the controller 12 and increase or decrease the hot air temperature in an operation state in which the motor 5 and the heater 6 are driven. In a state where the heat output of the heater 6 changes, the control unit 29 automatically adjusts the drive rotation speed of the motor 5 based on the detection signal of the temperature sensor 25 to keep the hot air temperature constant. It is.

  Depending on the difference in the adjustment speed of the controller 12 by the user, there are a slow adjustment in which the adjustment speed of the adjustment signal is lower than a predetermined value and a quick adjustment in which the adjustment speed of the adjustment signal is higher than the predetermined value. When the adjustment state of the controller 12 is a slow speed adjustment, the control unit 29 performs a normal control for adjusting the driving rotational speed of the motor 5 based on the detection signal of the temperature sensor 25 to keep the hot air temperature constant. It is comprised so that it may hold | maintain. Further, when the adjustment state of the controller 12 is rapid adjustment, the control unit 29 leaves the normal control and shifts to a preset correction control until a predetermined time elapses to correct the hot air temperature. After a predetermined time elapses, the control returns to the normal state control so that the hot air temperature is kept constant.

  When the controller 12 is adjusted from an arbitrary adjustment position to the side where the heat output of the heater 6 decreases, if the adjustment state of the controller 12 is a rapid decrease adjustment, the control unit 29 shifts to correction control, and the motor The drive rotational speed of 5 is minimized, and the control returns to the normal state after a predetermined time T1 has elapsed.

  When the adjustment amount of the controller 12 is a rapid decrease adjustment that exceeds 50% of the adjustment stroke of the controller 12, the control unit 29 shifts from the normal control to the correction control, and minimizes the drive rotation number of the motor 5 to a predetermined value. The system is configured to return to the normal control after the time T1 has elapsed.

  When the controller 12 is adjusted from an arbitrary adjustment position to the side where the heat output of the heater 6 increases, if the adjustment state of the controller 12 is a rapid increase adjustment, the control unit 29 shifts to correction control, and the motor 5 is maximized, and after a predetermined time T2 has elapsed, the control returns to normal control.

  When the adjustment amount of the controller 12 is a rapid increase adjustment exceeding 50% of the adjustment stroke of the controller 12, the control unit 29 shifts to the correction control and returns to the normal control after a predetermined time T2 has elapsed. It is configured.

  When the controller 12 is adjusted from an arbitrary adjustment position to the side where the heat output of the heater 6 decreases, if the adjustment state of the controller 12 is a rapid decrease adjustment, the control unit 29 shifts to correction control, and the motor The drive rotational speed of 5 is minimized, and after a predetermined time T1 has elapsed, the control returns to the normal control. Further, when the controller 12 is adjusted from an arbitrary adjustment position to the side where the heat output of the heater 6 increases, if the adjustment state of the controller 12 is a rapid increase adjustment, the control unit 29 shifts to correction control. The drive speed of the motor 5 is maximized to return to the normal control after a predetermined time T2 has elapsed.

  The drive time T1 of the motor 5 when the adjustment state of the controller 12 is a rapid decrease adjustment and the drive time T2 of the motor 5 when the adjustment state of the controller 12 is a rapid increase adjustment satisfy the inequality (T1 <T2). It is set to do.

  After the controller 12 is adjusted to rapidly decrease, when the controller 12 is adjusted to increase rapidly within a predetermined time T1, the control unit 29 is configured to control the drive rotation speed of the motor 5 based on the normal state control.

  After the controller 12 is adjusted to increase rapidly, when the controller 12 is adjusted to decrease rapidly within a certain time T2, the control unit 29 is configured to control the driving rotational speed of the motor 5 based on normal control.

  A plurality of temperature sensors 25 are provided in the main body case 1. Based on the detection signal of the temperature sensor 25 that has detected the highest temperature among the plurality of temperature sensors 25, the control unit 29 controls the driving state of the blower fan 4 and the heater 6.

  The operation mode of the hot air dryer includes a hot air mode in which the motor 5 and the heater 6 are driven to supply hot air, and a cold air mode in which only the motor 5 is driven to supply cold air. In a state where the operation mode is switched from the cold air mode to the hot air mode, the control unit 29 shifts to correction control, maximizes the heat output of the heater 6 and drives for a predetermined time T3, and then shifts to normal control. The heat output of the heater 6 is adjusted based on the detection signal of the temperature sensor 25.

  The driving time T1 of the heater 6 at the time of the rapid decrease adjustment, the driving time T2 of the heater 6 at the time of the rapid increase adjustment, and the driving time T3 of the heater 6 in the correction control satisfy the inequality (T1> T3> T2). Set.

  As shown in FIG. 3, hot air mode display bodies 31 to 34 that emit light in the warm air mode and a cold air mode display body 35 that emits light in the cold air mode are provided on the outer surface of the main body case 1. The hot air mode display bodies 31 to 34 and the cold air mode display body 35 are disposed adjacent to each other.

  The warm air mode is composed of a plurality of warm air modes, and a plurality of warm air mode display bodies 31 to 34 are provided corresponding to each warm air mode. A mode changeover switch 9 is arranged adjacent to the hot air mode display bodies 31 to 34.

  A cool air mode display body 35 is disposed between the hot air mode display bodies 31 to 34 and the mode switch 9.

  The hot air mode display bodies 31 to 34 and the cold air mode display body 35 are arranged in a straight line.

  The mode change switch 9 and the cold air switch 13 for switching the hot air dryer operated in the hot air mode to the cold air mode are disposed at positions away from the case structure including the main body case 1 and the handle 3.

  As shown in FIG. 2, the hot air mode display bodies 31 to 34, the cold air mode display body 35, and the mode changeover switch 9 are arranged on the main body case 1, and the cold air switch 13 is arranged on the handle 3.

  The heater 6 is composed of a plate-like heater substrate 22 having insulating properties and a heater wire 23 wound around the heater substrate 22 in a spiral shape. The temperature sensor 25 includes a radial lead type thermistor including a detection unit 25a and a pair of lead units 25b. As shown in FIG. 4, the temperature sensor 25 is fixed to the terminal 26 of the heater substrate 22 with the pair of lead portions 25 b positioned on the front surface and the back surface of the heater substrate 22.

  A plurality of heater substrates 22 are crossed, and a heater wire 23 is spirally wound around each substrate 22. The lead portion 25b of the temperature sensor 25 is fixed to the terminal 26 provided at the cross base of the heater substrate 22, and the detection portion 25a is arranged in a state of facing the leeward heater wire 23.

  As shown in FIG. 8, the controller 12 includes a slide-type variable resistor 39 and a slide knob 40 that is attached to the handle 3 and reciprocates the operation portion 39 a of the variable resistor 39. The handle 3 is provided with a guide portion 41 that slides and guides the slide knob 40 and a resistance wall 42 that imparts frictional resistance to the slide knob 40. The slide knob 40 includes a knob body 43 that is slid and guided by a guide portion 41 and an elastic slide arm 45 that is in sliding contact with the resistance wall 42. A frictional resistance between the elastic slide arm 45 and the resistance wall 42 is applied to the slide knob 40 that is reciprocally operated, thereby applying an operation resistance to the slide knob 40.

  The resistance wall 42 facing both ends of the reciprocating stroke of the elastic slide arm 45 is provided with a friction increasing portion 48 that increases the amount of elastic deformation of the elastic slide arm 45.

  The hot air dryer of the present invention can be switched to the hot air mode when the cold air switch 13 is turned on or the mode change switch 9 is turned on in the cold air mode. It is possible to return to the warm air mode by operating any switch.

  In the hot air dryer of the present invention, the mode changeover switch 9 and the cold air switch 13 for switching the hot air dryer operating in the hot air mode to the cold air mode are separated from the case structure comprising the main body case 1 and the handle 3. Since it is arranged at the position, it is possible to avoid mistakes in operation mode switching due to user operation mistakes or misunderstandings.

  In the hot air dryer of the present invention, the hot air mode display bodies 31 to 34, the cold air mode display body 35, and the mode switching switch 9 are disposed in the main body case 1, and the cold air switch 13 is disposed in the handle 3. In a state where the handle 3 is grasped and tightened with one hand, the operation mode can be switched by operating the mode switch 9 with the free hand. Further, in the state where the handle 3 is clamped with one hand, the grip position can be changed, or the cold wind switch 13 can be operated with the thumb while the grip is clamped to switch to the cold wind mode or from the cold wind mode to the hot air mode. . Therefore, when operating the mode switching switch 9 or the cold air switch 13, there is no room for mistaken operation of the switch to be operated, and the operation mode can be switched more reliably.

  Since the hot air dryer of this invention has arrange | positioned the several hot air mode display bodies 31-34 and the cold wind mode display body 35 in the linear line form, when looking directly at the light emission condition of each display bodies 31-35. Needless to say, even when the light emission status of each of the display bodies 31 to 35 reflected in the mirror is indirectly visually recognized, the current operation mode can be clearly determined, and there is no room for misunderstanding.

  In the hot air dryer of the present invention, the cold air mode display body 35 is disposed between the hot air mode display bodies 31 to 34 and the mode changeover switch 9, and the hot air mode display bodies 31 to 34 and the cold air mode display body 35 are arranged. Since the mode change-over switches 9 are arranged in a straight line, the mode change-over switch 9 can be operated while viewing the display portion.

  In the hot air dryer, the control unit 29 receives the output signal of the temperature sensor 25 and the adjustment signal of the controller 12 to control the driving state of the motor 5 and the heater 6. Specifically, the control unit 29 adjusts the rotational speed of the motor 5 in accordance with the adjustment signal output from the controller 12 in the operation state in which the motor 5 and the heater 6 are driven, so that the amount of air blown by the blower fan 4 is adjusted. It was made possible to adjust the increase / decrease. In addition, the controller 29 automatically increases or decreases the heat output of the heater 6 based on the detection signal of the temperature sensor 25 in a state where the amount of air blown by the blower fan 4 increases or decreases. Irrespective of this, the hot air temperature can be kept constant.

  According to the hot air dryer provided with the control unit 29 as described above, the hot air temperature of the hot air dryer is automatically adjusted regardless of the environmental temperature, and the air volume adapted to a plurality of hair treatment states. Can supply hot air of temperature. Even when the user operates the controller 12 and adjusts the air supply amount of the blower fan 4 to a desired air amount, the control unit 29 controls the temperature regardless of the change in the air supply amount of the blower fan 4. Based on the detection signal of the sensor 25, the heat output of the heater 6 can be automatically increased or decreased to keep the hot air temperature constant.

  When the adjustment state of the controller 12 is a slow speed adjustment, the control unit 29 performs normal control to increase / decrease the heat output of the heater 6 based on the detection signal of the temperature sensor 25 to keep the hot air temperature constant. To do. As described above, when the controller 12 is adjusted at a slow speed, the normal control is performed because the change width of the drive speed of the motor 5 accompanying the slow speed adjustment is small. This is because the heat output of the heater 6 can be accurately controlled by normal state control. Further, when correction control is performed when the adjustment state of the controller 12 is rapid adjustment, the heat output of the heater 6 is appropriately controlled in a state commensurate with the adjustment operation of the motor 5 and is fed from the hot air dryer. This is because the hot air temperature can be kept constant by bringing the temperature of the hot air close to the target temperature. If the normal control is continued when the controller 12 is rapidly adjusted, the heat output of the heater 6 cannot be quickly controlled following the adjustment operation of the controller 12, and the temperature supplied from the hot air dryer The temperature of the wind is far from the target temperature.

  When the adjustment state of the controller 12 is the rapid decrease adjustment, when the control unit 29 shifts to the correction control and minimizes the heat output of the heater 6 and drives it for a predetermined time T1, the drive rotational speed of the motor 5 is rapidly increased. The heat output of the heater 6 can be reduced in response to such a decrease. Thereby, it can prevent that the heater 6 falls into an overshoot. Moreover, after the correction control is started and the predetermined time T1 has elapsed, the control returns to the normal control, and the hot air temperature supplied from the hot air dryer is kept constant. In order to minimize the heat output of the heater 6, the drive current supplied to the heater 6 is stopped, or the pulse width of the drive current and the number of pulses per unit time are reduced.

  When the adjustment amount of the controller 12 is a rapid decrease adjustment of 50% or more of the adjustment stroke of the controller 12, when the control unit 29 shifts from the normal control to the correction control and minimizes the heat output of the heater 6, the heater It is possible to prevent the heat output of 6 from being adjusted unnecessarily large. For example, when the adjustment amount of the controller 12 is 30% of the adjustment stroke of the controller 12, if correction control is performed to minimize the heat output of the heater 6, the control for correction becomes excessive and the control result Greatly varies from the target temperature. As a result, it takes time for the hot air temperature supplied from the hot air dryer to reach the target temperature. The control unit 29 returns to the normal control after a predetermined time T1 has elapsed from the start of the correction control, and keeps the hot air temperature supplied from the hot air dryer constant.

  When the adjustment state of the controller 12 is a rapid increase adjustment, when the control unit 29 shifts to the correction control and maximizes the heat output of the heater 6 and drives it for a predetermined time T2, the drive rotational speed of the motor 5 is rapidly increased. Corresponding to this increase, the heat output of the heater 6 can be increased. Thereby, it can prevent that the heater 6 falls into an undershoot. Moreover, after the correction control is started and a predetermined time T2 has elapsed, the control returns to the normal control, and the hot air temperature supplied from the hot air dryer is kept constant. In order to maximize the heat output of the heater 6, the drive current supplied to the heater 6 is maximized, or the pulse width of the drive current and the number of pulses per unit time are increased.

  When the adjustment amount of the controller 12 is a rapid increase adjustment of 50% or more of the adjustment stroke of the controller 12, when the control unit 29 shifts from the normal control to the correction control and maximizes the heat output of the heater 6, the heater It is possible to prevent the heat output of 6 from being adjusted unnecessarily large. For example, if the adjustment amount of the controller 12 is 20% of the adjustment stroke of the controller 12, if correction control is performed to maximize the heat output of the heater 6, the control for correction becomes excessive and the control result Greatly varies from the target temperature. As a result, it takes time for the hot air temperature supplied from the hot air dryer to reach the target temperature. The control unit 29 returns to the normal control after a predetermined time T1 has elapsed from the start of the correction control, and keeps the hot air temperature supplied from the hot air dryer constant.

  When the controller 12 is adjusted to decrease rapidly, the control unit 29 shifts to correction control to minimize the heat output of the heater 6, and when the controller 12 is adjusted to increase rapidly, the control unit 29 shifts to correction control. The heat output of the heater 6 is set to the maximum output. According to such a control form, it is possible to optimize the heat output of the heater 6 corresponding to all the rapid adjustment operations by the controller 12 and to keep the warm air temperature supplied from the warm air dryer constant.

  The driving time T1 of the heater 6 when the controller 12 is adjusted to rapidly decrease and the driving time T2 of the heater 6 when the controller 12 is adjusted to increase rapidly are set so as to satisfy the inequality (T1> T2). There are the following reasons. The temperature of the heater 6 in the state where the heat output is maximized is further heated from the state where it is already heated and holds a large amount of heat immediately before the maximum output is achieved, and the degree of increase in the amount of heat increases. For this reason, the target temperature can be approached in a shorter time, and overshoot is likely to occur. Therefore, by quickly shifting from the correction control to the normal state control, it is surely avoided that an overshoot occurs. Therefore, the relationship between the time T1 and the time T2 may be (T1> T2).

  The controller 29 controls the heat output of the heater 6 based on the normal control when the controller 12 is adjusted to increase rapidly within the predetermined time T1 after the controller 12 is adjusted to rapidly decrease for the following reason. In a state in which the controller 12 is adjusted to rapidly decrease, the control unit 29 temporarily switches to correction control to minimize the heat output of the heater 6. However, if the controller 12 is adjusted to increase rapidly before the predetermined time T1 elapses after switching to the correction control, the correction control for increasing the temperature before the correction control for decreasing the temperature of the heater 6 is completed. Must be done. In such a case, since the heat output of the heater 6 is maximized, the heater 6 easily falls into an overshoot state. In order to prevent such problems, the control unit 29 performs normal control based on the detection signal of the temperature sensor 25 without maximizing the heat output of the heater 6.

  The controller 29 controls the heat output of the heater 6 based on the normal control when the controller 12 is adjusted to rapidly decrease within a predetermined time T2 after the controller 12 is adjusted to increase rapidly, for the following reason. In a state where the controller 12 is adjusted to increase rapidly, the control unit 29 once switches to correction control to maximize the heat output of the heater 6. However, if the controller 12 is adjusted to rapidly decrease before the predetermined time T2 elapses after switching to the correction control, the correction control in the direction in which the temperature decreases before the correction control for increasing the temperature of the heater 6 is completed. Must be done. In such a case, since the heat output of the heater 6 is minimized, the heater 6 easily falls into an undershoot state. In order to prevent such problems, the control unit 29 performs normal control based on the detection signal of the temperature sensor 25 without minimizing the heat output of the heater 6.

  In another hot air dryer, the control unit 29 receives the output signal of the temperature sensor 25 and the adjustment signal of the controller 12 to control the driving state of the motor 5 and the heater 6. Specifically, the control unit 29 can adjust the heat output of the heater 6 according to the adjustment signal output from the controller 12 in the operation state where the motor 5 and the heater 6 are driven so that the hot air temperature can be increased or decreased. I made it. In addition, the control unit 29 automatically adjusts the drive rotational speed of the motor 5 based on the detection signal of the temperature sensor 25 in a state where the heat output of the heater 6 increases or decreases, and has no relation to the change in the heat output of the heater 6. The hot air temperature can be kept constant.

  According to the hot air dryer provided with the control unit 29 as described above, the hot air temperature of the hot air dryer can be automatically adjusted regardless of the environmental temperature. Further, even when the user operates the controller 12 to adjust the air blowing temperature to a desired temperature, the control unit 29 automatically increases or decreases the drive rotational speed of the motor 5 based on the detection signal of the temperature sensor 25. Thus, the hot air temperature can be kept constant.

  When the adjustment state of the controller 12 is a slow speed adjustment, the control unit 29 performs normal control to increase / decrease the drive rotation speed of the motor 5 based on the detection signal of the temperature sensor 25 to keep the hot air temperature constant. Hold. As described above, when the controller 12 is adjusted at a slow speed, the normal control is performed because the change in the heat output of the heater 6 due to the slow speed adjustment is small, and the motor 5 follows the adjusting operation of the heater 6 with certainty. This is because the number of rotations can be controlled accurately by normal control. Further, when correction control is performed when the adjustment state of the controller 12 is rapid adjustment, the drive rotational speed of the motor 5 is appropriately controlled in a state commensurate with the adjustment operation of the heater 6 and is fed from the hot air dryer. This is because the warm air temperature can be kept constant by bringing the temperature of the warm air close to the target temperature. If the normal control is continued when the controller 12 is rapidly adjusted, the drive speed of the motor 5 cannot be quickly controlled following the adjustment operation of the controller 12 and is fed from the hot air dryer. The temperature of the hot air deviates greatly from the target temperature.

  When the adjustment state of the controller 12 is the rapid decrease adjustment, when the control unit 29 shifts to the correction control and minimizes the drive rotational speed of the motor 5 and drives it for a predetermined time T1, the heat output of the heater 6 is rapidly increased. Corresponding to the decrease, the drive rotation speed of the motor 5 can be decreased. Thereby, it can prevent that the heater 6 falls into an undershoot. Moreover, after the correction control is started and the predetermined time T1 has elapsed, the control returns to the normal control, and the hot air temperature supplied from the hot air dryer is kept constant. In order to minimize the drive speed of the motor 5, the drive current supplied to the motor 5 is stopped, or the pulse width of the drive current and the number of pulses per unit time are reduced.

  When the adjustment amount of the controller 12 is a rapid decrease adjustment of 50% or more of the adjustment stroke of the controller 12, when the control unit 29 shifts from the normal control to the correction control and minimizes the driving rotational speed of the motor 5, 5 can be prevented from being unnecessarily large adjusted. For example, when the adjustment amount of the controller 12 is 30% of the adjustment stroke of the controller 12, if correction control is performed to minimize the drive rotation of the motor 5, the control for correction becomes excessive and the control result Greatly varies from the target temperature. As a result, it takes time for the hot air temperature supplied from the hot air dryer to reach the target temperature. The control unit 29 returns to the normal control after a predetermined time T1 has elapsed from the start of the correction control, and keeps the hot air temperature supplied from the hot air dryer constant.

  When the adjustment state of the controller 12 is a rapid increase adjustment, when the control unit 29 shifts to the correction control and maximizes the drive rotational speed of the motor 5 and drives it for a predetermined time T2, the heat output of the heater 6 increases rapidly. Corresponding to this, the drive rotation speed of the motor 5 can be increased. Thereby, it can prevent that the heater 6 falls into an overshoot. Moreover, after the correction control is started and a predetermined time T2 has elapsed, the control returns to the normal control, and the hot air temperature supplied from the hot air dryer is kept constant. In order to maximize the drive rotational speed of the motor 5, the drive current supplied to the motor 5 is maximized, or the pulse width of the drive current and the number of pulses per unit time are increased.

  When the adjustment amount of the controller 12 is a rapid increase adjustment of 50% or more of the adjustment stroke of the controller 12, when the control unit 29 shifts from the normal control to the correction control and maximizes the driving rotational speed of the motor 5, the motor It is possible to prevent the drive rotational speed of 5 from being adjusted unnecessarily large. For example, if the adjustment amount per unit time of the controller 12 is 20% of the adjustment stroke of the controller 12, if the correction control is performed to maximize the driving speed of the motor 5, the control for the correction becomes excessive. Thus, the control result varies greatly from the target temperature. As a result, it takes time for the hot air temperature supplied from the hot air dryer to reach the target temperature. The control unit 29 returns to the normal control after a predetermined time T2 has elapsed from the start of the correction control, and keeps the hot air temperature supplied from the hot air dryer constant.

  When the controller 12 is adjusted to rapidly decrease, the control unit 29 shifts to correction control to minimize the driving speed of the motor 5, and when the controller 12 is adjusted to increase rapidly, the control unit 29 shifts to correction control. The drive rotational speed of the motor 5 is maximized. According to such a control mode, it is possible to optimize the driving rotational speed of the motor 5 in response to all the rapid adjustment operations by the controller 12 and to keep the hot air temperature supplied from the hot air dryer constant.

  The driving time T1 of the motor 5 when the controller 12 is adjusted to rapidly decrease and the driving time T2 of the motor 5 when the controller 12 is adjusted to increase rapidly are set so as to satisfy the inequality (T1 <T2). There are the following reasons. When the controller 12 is adjusted to increase rapidly, the heat output of the heater 6 increases rapidly. Therefore, by increasing the driving time T2 of the motor 5, the temperature of the hot air supplied from the hot air dryer can be brought closer to the target temperature in a shorter time. Accordingly, the relationship between the time T1 and the time T2 may be (T1 <T2).

  When the controller 12 is rapidly increased and adjusted within the predetermined time T1 after the controller 12 is adjusted to rapidly decrease, the control unit 29 controls the drive speed of the motor 5 based on the normal control for the following reason. In a state in which the controller 12 is adjusted to rapidly decrease, the control unit 29 temporarily switches to correction control and minimizes the driving rotational speed of the motor 5. However, if the controller 12 is adjusted to increase rapidly before the predetermined time T1 elapses after switching to the correction control, the drive rotation of the motor 5 is completed before the correction control for minimizing the drive rotation speed of the motor 5 is completed. It is necessary to perform correction control in the direction in which the number increases. In such a case, since the drive rotational speed of the motor 5 is maximized, the heater 6 tends to fall into an undershoot state. In order to prevent such a malfunction, the control unit 29 performs normal control based on the detection signal of the temperature sensor 25 without maximizing the driving rotation speed of the motor 5.

  After the controller 12 is adjusted to increase rapidly, when the controller 12 is adjusted to decrease rapidly within the predetermined time T2, the control unit 29 controls the drive speed of the motor 5 based on the normal control for the following reason. In a state in which the controller 12 is adjusted to increase rapidly, the control unit 29 once switches to correction control to maximize the drive rotational speed of the motor 5. However, if the controller 12 is adjusted to rapidly decrease before the predetermined time T2 elapses after switching to the correction control, the drive rotation speed of the motor 5 is increased before the correction control in which the drive rotation speed of the motor 5 is increased. Therefore, it is necessary to carry out correction control in such a direction that decreases. In such a case, since the driving rotational speed of the motor 5 is minimized, the heater 6 tends to fall into an overshoot state. In order to prevent such a problem, the control unit 29 performs normal control based on the detection signal of the temperature sensor 25 without minimizing the driving rotational speed of the motor 5.

  The hot air temperature is detected by the plurality of temperature sensors 25 based on the detection signal of the temperature sensor 25 that has detected a higher temperature by controlling the driving state of the blower fan 4 and the heater 6 by the control unit 29. This is to increase the safety of the machine.

  In the state where the operation mode is switched from the cold air mode to the hot air mode, when the control unit 29 shifts to the correction control to maximize the heat output of the heater 6 and drives it for a predetermined time T3, the rising of the hot air temperature is started. The time to return to the target temperature suddenly can be shortened. Further, after the predetermined time T3 has elapsed, the control returns to the normal control, and the hot air temperature supplied from the hot air dryer can be kept constant.

  The reason why the relationship between the drive times T1, T2, and T3 of the heater 6 satisfies the inequality (T1> T3> T2) is that the heater 6 falls into an overshoot when returning from the cold air mode to the hot air mode. This is for speeding up the rise of the hot air temperature when returning to the hot air mode while preventing it. Note that when T1 = <T3, the amount of heat generation becomes excessive as the heat generation time of the heater 6 is long, and overshooting tends to occur. Further, when T3 = <T2, the amount of heat generation is insufficient by the amount of heat generation time of the heater 6, and the time until the warm air temperature when returning to the warm air mode reaches the target temperature is prolonged.

  If the hot air mode display bodies 31 to 34 and the cold air mode display body 35 are arranged adjacent to each other, the current operation mode can be clearly discriminated only by looking at the difference in the number of LEDs 31 to 35 and the emission color.

  If the mode changeover switch 9 is disposed adjacent to the plurality of hot air mode display bodies 1 to 34, the current operation mode can be clearly determined by simply glanceping each display body 31 to 34.

  If the cool air mode display body 35 is disposed between the hot air mode display bodies 31 to 34 and the mode changeover switch 9, the user can confirm that the cold air mode is selected without any mistakes. In particular, when the emission color of the cold air mode display body 35 is greatly different from the emission color of the hot air mode display bodies 31 to 34, it can be confirmed that it is definitely the cold air mode.

  When the hot air mode display bodies 31 to 34 and the cold air mode display bodies 35 are arranged in a straight line, the light emission state of each display body 31 to 35 is of course directly viewed, and each of the display bodies 31 to 35 reflected in the mirror is displayed. Even when the light emission state is visually recognized indirectly, the current operation mode can be clearly determined, and there is no room for misunderstanding.

  If the mode change switch 9 and the cold air switch 13 are arranged at positions separated from each other in the case structure, it is possible to avoid an operation mode change error due to a user's operation mistake or misunderstanding.

  When the hot air mode display bodies 31 to 34, the cold air mode display body 35, and the mode changeover switch 9 are arranged in the main body case 1, and the cold air switch 13 is arranged in the handle 3, the handle 3 is vacant in a state where the handle 3 is clamped with one hand. The operation mode can be switched by operating the mode switching switch 9 with the hand on the other side. Further, in the state where the handle 3 is clamped with one hand, the grip position can be changed, or the cold wind switch 13 can be operated with the thumb while the grip is clamped to switch to the cold wind mode or from the cold wind mode to the hot air mode. . Therefore, when operating the mode switching switch 9 or the cold air switch 13, there is no room for mistaken operation of the switch to be operated, and the operation mode can be switched more reliably.

  When the temperature sensor 25 is composed of a radial lead type thermistor and the pair of lead portions 25b are positioned on the front and back surfaces of the heater substrate 22, the temperature sensor 25 is fixed to the terminal 26 of the heater substrate 22, so that the pair of lead portions Since 25b can be isolated by the heater substrate 22, it is possible to reliably prevent the pair of lead portions 25b from contacting and short-circuiting. Further, the pair of lead portions 25b are firmly supported by the heater substrate 22, and the detection portion 25a can be reliably prevented from being displaced during use.

  When the lead portion 25b of the temperature sensor 25 is fixed to the terminal 26 provided at the cross base portion of the heater substrate 22 and the detection portion 25a is directly opposed to the heater wire 23 on the leeward side, the heater wire 23 is contacted and heated. It is possible to accurately detect the temperature of the warm air immediately after.

  In the controller 12 having the slide-type variable resistor 39 and the slide knob 40, when the friction resistance between the elastic slide arm 45 and the resistance wall 42 is applied to the slide knob 40 that is reciprocally operated, the slide knob 40. Can be stopped and held at an arbitrary adjustment position. Further, by applying an appropriate operation resistance to the slide knob 40, it is possible to prevent the slide knob 40 from being excessively operated by sliding, and to make the operation feeling during adjustment smooth and crisp.

  When a friction increasing portion 48 that increases the amount of elastic deformation of the elastic slide arm 45 is provided on the resistance wall 42 facing both ends of the reciprocating stroke of the elastic slide arm 45, the elastic slide arm 45 is provided at the upper and lower ends of the reciprocating stroke of the slide knob 40. The operating resistance can be increased by increasing the amount of elastic deformation. Accordingly, even when the slide knob 40 is suddenly operated, it is possible to reliably prevent the operation portion 39a of the variable resistor 39 from impactingly colliding with the groove end of the slide groove 49.

It is a flowchart which shows the control procedure of the hair dryer which concerns on this invention. It is explanatory drawing which shows schematic structure of the hair dryer which concerns on this invention. It is a side view which shows the detail of a display unit. It is the schematic of the AA line cross section in FIG. It is a block diagram which shows the outline of the electronic circuit of a hair dryer. It is explanatory drawing which shows the switching procedure of the operation mode of a hair dryer. It is a graph which shows the electrical component in each operation mode, and the operating condition of a display part. It is a vertical front view which shows the detailed structure of a controller. It is the BB sectional view taken on the line in FIG. It is a timing chart regarding the control change at the time of rapid adjustment. It is a flowchart which shows the correction | amendment control procedure at the time of rapid fall adjustment. It is a flowchart which shows the correction | amendment control procedure at the time of rapid increase adjustment. It is a timing chart regarding the control change at the time of rapid adjustment. It is a timing chart regarding the control change at the time of cold wind mode.

  Example 1 FIGS. 1 to 14 show Example 1 of a hair dryer (hot air dryer) according to the present invention. In the present invention, “front / rear”, “left / right”, and “up / down” follow the cross arrows shown in FIGS. In FIG. 2, the hair dryer includes a main body case 1 made of a hollow cylinder, and a handle 3 connected to the main body case 1 so as to be foldable about a shaft 2. The main body case 1 and the handle 3 are the hair dryers. The case structure is configured. Inside the main body case 1, an axial flow type blower fan 4 for supplying dry air and a motor 5 for rotationally driving the fan 4 are arranged, and a heater 6 is arranged on the downstream side of the blower fan 4. In FIG. 2, the code | symbol 52 is the suction inlet of the main body case 1, and 53 is a blower outlet. In the hair dryer in use, the air sucked from the suction port 52 by the blower fan 4 is pressurized and fed toward the blowout port 53, heated while passing through the heater 6, warmed, and blown. It is blown out from the outlet 53. When the operation of the heater 6 is stopped, pressurized air at normal temperature (cold air) is blown out from the blowout port 53.

  As shown in FIG. 3, a mode changeover switch 9 that switches the operation mode of the hair dryer and a display unit 10 that lights up in accordance with each operation mode are provided on the upper right side of the main body case 1. As shown in FIG. 2, a main switch 11 that activates the motor 5 and the heater 6 and a controller 12 that adjusts the driving speed of the motor 5 are provided on the front surface of the handle 3. A cool air switch 13 for switching the operation state of the hair dryer from the warm air mode to the cold air mode is provided on the rear surface of the handle 3. Above the heater 6, a pair of left and right ion generating discharge electrodes 14, a Peltier element 15, a heat sink 16, and the like are provided. In FIG. 2, reference numeral 17 denotes a transformer, 18 denotes a power source-control board, and 19 denotes a temperature control board. As described above, the mode change switch 9 is disposed on the upper right side of the main body case 1, the cold air switch 13 is disposed on the back surface of the handle 3, and both switches 9 and 13 are disposed at positions away from the case structure. This is to avoid mistakes in operation mode switching due to user operation mistakes or misunderstandings.

  As shown in FIG. 4, the heater 6 includes a heater substrate 22 that has insulation and is assembled in a cross shape, a heater wire 23 that is spirally wound around the heater substrate 22, and a wind guide tube 24 that is formed of an insulating material. Configure. Two temperature sensors 25 are arranged on the heater substrate 22. The temperature sensor 25 includes a radial lead type thermistor including a detection unit 25a and a pair of lead portions 25b. The pair of lead portions 25b are positioned on the front and back surfaces of the heater substrate 22, and the terminals 26 of the heater substrate 22 are disposed. It is fixed to. As shown in the enlarged view of FIG. 4, the detection unit 25a in this state is directly opposed to the leeward heater wire 23, thereby accurately determining the temperature of the hot air immediately after being heated in contact with the heater wire 23. Can be detected. Further, since the pair of lead portions 25b can be isolated by the heater substrate 22, it is possible to reliably prevent the lead portions 25b from coming into contact and short-circuiting. Furthermore, the pair of lead portions 25b are firmly supported by the heater substrate 22, and the detection portion 25a can be reliably prevented from shifting during use. In addition, when the detection unit 25a is arranged facing the inner side or the outer side of the winding region of the heater wire 23, the temperature of the hot air passing through the detection unit 25 is lowered, so that the temperature control of the hot air is accurately performed. It becomes impossible to do.

  Control circuits 5C, 6C, and 15C are individually provided to control the operating states of the motor 5, the heater 6, and the Peltier element 15 (see FIG. 5). In addition, in response to signals output from the mode switching switch 9, the controller 12, the cool air switch 13, and the temperature sensor 25, an operation command signal is output to each of the control circuits 5C, 6C, and 15C, and the motor 5 (blower fan 4), A control unit 29 made of a microcomputer for controlling the driving state of the heater 6 and the Peltier element 15 is provided. The discharge electrode 14 is activated or stopped in response to an on / off operation of the main switch 11. As described above, the two temperature sensors 25 are arranged. This is based on the detection signal of the temperature sensor 25 that has detected a higher temperature, and the drive states of the blower fan 4 and the heater 6 are controlled by the control circuits 5C and 6C. This is to increase the safety level by controlling with.

  When the main switch 11 is turned on, a commercial alternating current is supplied to the power-control board 18 to adjust the current for operating the motor 5, the heater 6, the discharge electrode 14, and the like. Further, according to the adjustment signal from the controller 12, the control unit 29 switches the driving rotational speed of the motor 5 between large and small. When the main switch 11 is turned on, the heater 6 is in the first mode in which the amount of heat generated is maximum (see FIG. 7), and warm air of 100 degrees C is sent out from the outlet 53. The drive current supplied to the heater 6 is a pulse current, and the amount of heat generated by the heater 6 is adjusted by controlling the pulse width and the number of pulses per unit time by the control unit 29. Each time the mode switch 9 is turned on in this state, the mode is switched to the second mode (90 degrees C), the third mode (80 degrees C), and the fourth mode (60 degrees C) as shown in FIG. The warm air at the temperature in parentheses is sent out from the outlet. Further, when the cool air switch 13 is turned on in each warm air mode, the mode is switched to the fifth mode (cold air mode), the power supply to the heater 6 is cut off, and the normal temperature dry air is sent out from the outlet. Furthermore, in the fifth mode, when the cold air switch 13 is turned on again or the mode changeover switch 9 is operated, it is possible to switch to the hot air mode (first to fourth modes).

  A display unit 10 is provided to perform light emission display according to each of the above operation modes. As shown in FIG. 3, the display unit 10 includes four LEDs (warm air mode display bodies) 31, 32, 33, and 34 and one LED (cold air mode display body) 35 on an LED substrate 30 that is long in the front and rear direction. Are mounted at equal intervals, and the LEDs 31, 32, 33, and 34 are turned on according to the operation modes of the first mode to the fourth mode. Specifically, as shown in FIG. 7, in the first mode, the three LEDs 31, 32, and 33 emit red light, and in the second mode, the two LEDs 32, 33 emit red light, In the third mode, one LED 33 emits red light. In the fourth mode, the respective LEDs 31, 32, and 33 stop emitting light, and the LED 34 emits green light. In a state where the cold air switch 13 is turned on and switched to the fifth mode, the LED 35 located at the rear end in FIG. 3 is turned on to emit blue light. Therefore, the user can discriminate the current operation mode from the number of lighting of each LED 31 to 35 and the difference in emission color. A transparent window plate 36 that covers the outer surfaces of the LEDs 31 to 35 is fixed to the main body case 1.

  As described above, the five LEDs 31 to 35 are arranged in a straight line in a state adjacent to each other at regular intervals, and the mode changeover switch 9 is arranged on the extension of the arrangement line. In other words, the mode change switch 9 is disposed adjacent to the hot air mode display LEDs 31 to 34, and the cool air mode display LED 35 is disposed between the hot air mode display LEDs 31 to 34 and the mode change switch 9. doing.

  As described above, when the LEDs 31 to 34 for displaying the hot air mode and the LEDs 35 for displaying the cold air mode are arranged adjacent to each other, it is necessary to glance at the number of LEDs 31 to 35 to be lit and the difference in emission color. The mode can be clearly identified. Further, since the mode change switch 9 is disposed adjacent to the hot air mode display LEDs 31 to 34, the mode change switch 9 is changed over while clearly observing the lighting states (operation modes) of the LEDs 31 to 34. It is possible to switch the operation mode accurately. Furthermore, since the LED 35 for cold air mode display is arranged between the LEDs 31 to 34 for displaying the hot air mode and the mode changeover switch 9, the user is mistaken for the fact that the emission color is only blue. It can confirm that it is cold air mode without. Since the LEDs 31 to 34 for displaying the hot air mode and the LEDs 35 for displaying the cold air mode are arranged in a straight line, the LEDs 31 to 35 reflected in the mirror are of course used when the lighting conditions of the LEDs 31 to 35 are directly viewed. Even when the lighting state of is indirectly visually recognized, the current operation mode can be clearly identified, and there is no room for misunderstanding.

  As shown in FIGS. 8 and 9, the controller 12 includes a slide-type variable resistor 39 and a slide knob 40 that is attached to the handle 3 and reciprocates the operation portion 39 a of the variable resistor 39. A guide portion 41 that slides and guides the slide knob 40 is formed on the front surface of the handle 3, and resistance walls 42 that impart frictional resistance to the slide knob 40 are provided on the left and right sides of the inner wall of the handle 3. The slide knob 40 is integrally provided with a knob main body 43 that is slid and guided by the guide portion 41, a slide base 44 that slides along the inner wall of the handle 3, and elastic slide arms 45 formed on the left and right sides of the slide base 44. ing. Friction protrusions 46 that move along with the knob body 43 while being in close contact with the resistance wall 42 are provided in the middle of the elastic slide arm 45 in the vertical direction. The resistance wall 42 facing the reciprocating stroke of the elastic slide arm 45 is provided with a friction portion 47 that elastically deforms the elastic slide arm 45, and the elastic deformation amount of the elastic slide arm 45 is set at the upper and lower ends of the friction portion 47. An increasing frictional portion 48 is provided. Reference numeral 49 denotes a slide groove that slides and guides the operation portion 39a.

  When the variable resistor 39 is reciprocally operated by the slide knob 40, the elastic slide arm 45 is elastically deformed by the friction portion 47, and the friction resistance is applied to the slide knob 40, so that the operation portion 39a of the variable resistor 39 is arbitrarily adjusted. Can be stopped and held in position. Further, by applying an appropriate operation resistance to the slide knob 40, it is possible to prevent the slide knob 40 from being excessively operated by sliding, and to make the operation feeling during adjustment smooth and crisp. At the upper and lower ends of the reciprocating stroke of the elastic slide arm 45, the amount of elastic deformation of the elastic slide arm 45 can be increased to increase the operating resistance. Therefore, even when the slide knob 40 is suddenly operated, the operating portion of the variable resistor 39 It is possible to reliably prevent 39a from impactingly colliding with the groove end of the slide groove 49. The output of the variable resistor 39 changes in magnitude only when the friction projection 46 is in contact with the friction portion 47, and the friction projection 46 rides from the friction portion 47 to the increased friction portion 48 to the stroke end. During the movement, the control unit 29 controls so that the driving rotational speed of the motor 5 does not change.

(Hot air mode)
In order to automatically adjust the air flow rate and temperature adjustment of the hair dryer regardless of changes in the environmental temperature and supply the hot air having the air flow rate and temperature suitable for a plurality of hair processing conditions, the control unit 29 is as follows. To control the operation. When the main switch 11 is turned on, each of the control circuits 5C, 6C, and 15C receives the operation command signal from the control unit 29, operates the motor 5, the heater 6, and the Peltier element 15, and supplies a high discharge current to the discharge electrode 14. Supply. At this time, the heater 6 is supplied with a drive current so as to obtain the maximum heat output, and the motor 5 is rotationally driven at a rotational speed corresponding to the output signal of the controller 12 to maintain the first mode. In this state, the mode changeover switch 9 is switched to switch the operation mode of the hair dryer from the second mode to the fourth mode.

  For example, when it is desired to dry the hair after shampooing, hot air of high temperature (100 ° C.) is blown out and delivered in the state where the operation mode of the hair dryer is set to the first mode. When the drive speed of the motor 5 in this state is the minimum speed, since the amount of warm air blown out is small, the slide knob 40 is slid upward to drive the drive speed of the motor 5. By increasing, the amount of warm air blown out can be increased. However, when the drive rotation speed of the motor 5 increases, the temperature of the hot air decreases by an amount corresponding to the increase in the amount of supplied air. In order to prevent such a temperature decrease, the control unit 29 automatically increases and adjusts the heat output of the heater 6 based on the detection signal of the temperature sensor 25 to maintain the hot air temperature at 100 degrees C.

  As described above, in the first embodiment, in the operation state in which the motor 5 and the heater 6 are driven, the control unit 29 adjusts the drive rotational speed of the motor 5 according to the adjustment signal output from the controller 12 to The amount of air blown by the fan 4 is adjusted to increase or decrease. Further, in the state where the air flow rate of the blower fan 4 increases or decreases, the heat output of the heater 6 is automatically adjusted to increase or decrease based on the detection signal of the temperature sensor 25 (steps S1 to S3 in FIG. 1). The warm air temperature can be kept constant regardless of the increase / decrease of the air volume (this control is hereinafter referred to as normal control). The temperature of the environment where the hair dryer is used varies greatly depending on the season, but even in that case, the hot air temperature is adjusted to the target temperature by automatically adjusting the heat output of the heater 6 based on the detection signal of the temperature sensor 25. It can be held at 100 degrees C. Also in each operation mode from the second mode to the fourth mode, the control unit 29 performs the same normal control as described above, and the temperature of the hot air supplied from the hair dryer is the target temperature set in each operation mode. It is trying to become.

(Slow and rapid adjustment)
Due to the difference in the adjustment speed of the controller 12 by the user, the adjustment speed of the adjustment signal falls below a predetermined value (hereinafter referred to as slow adjustment), and the adjustment speed of the adjustment signal exceeds the predetermined value (hereinafter referred to as rapid adjustment). Say). The adjustment speed of the adjustment signal can be determined by the voltage change amount per unit time in the variable resistor 39. For example, when the voltage change amount per unit time changes by 5% per 0.1 second, a predetermined value is set. As a (reference), a slow adjustment and a rapid adjustment are discriminated. As shown in FIG. 1, when the slide knob 40 is adjusted at a slow speed, the control unit 29 performs the above-described normal control to adjust the hot air temperature in each operation mode to the target temperature. However, when the slide knob 40 is rapidly adjusted, the control unit 29 shifts to the preset correction control until the predetermined time elapses from the normal control, corrects the hot air temperature, After a lapse of time, the control returns to the normal control and the hot air temperature is kept constant. The correction control is to forcibly change the control state from the normal control state to the preset minimum output or maximum output set value or a set value close thereto. In the correction control, the control method differs depending on whether the adjustment direction of the slide knob 40 decreases or increases.

(Rapid decline adjustment and rapid increase adjustment)
In the rapid adjustment, when the slide knob 40 is rapidly operated from the increase position toward the decrease position (hereinafter referred to as rapid decrease adjustment), the slide knob 40 is rapidly operated from the decrease position toward the increase position. (Hereinafter referred to as rapid increase adjustment). In any case, when the adjustment amount per unit time of the slide knob 40 is small, the drive rotation of the blower fan 4 does not fluctuate greatly, so the control unit 29 maintains normal control. However, when the adjustment amount of the slide knob 40 (controller 12) is a rapid adjustment of 50% or more of the adjustment stroke of the slide knob 40 (controller 12) in the friction portion 47, the control unit 29 performs the following correction. The amount of heat generated by the heater 6 is controlled.

  Specifically, as shown in FIGS. 1 and 10, when the adjustment amount of the slide knob 40 is a rapid decrease adjustment of 50% or more of the adjustment stroke (YES in step S4 of FIG. 1), the drive rotation of the motor 5 Since the number rapidly decreases, there is a possibility that the amount of air blown by the blower fan 4 is suddenly reduced and the heater 6 falls into an overshoot (excessive rise). In order to avoid this, the control unit 29 shifts from the normal control to the correction control when the adjustment amount of the slide knob 40 becomes 50% or more of the adjustment stroke (step S5 in FIG. 1), and the heat output of the heater 6 Is minimized (step S11 in FIG. 11), and after a predetermined time T1 (0.8 seconds) has elapsed, the control returns to normal control (YES in step S13 in FIG. 11). The control unit 29 for minimizing the heat output of the heater 6 stops the drive current supplied to the heater 6, or reduces the pulse width of the drive current and the number of pulses per unit time. When minimizing the heat output of the heater 6, the supply of the drive current is completely stopped and the heat output of the heater 6 is set to zero (Low). Alternatively, the supply of drive current is set to a value close to zero, and the heat output of the heater 6 is set to a value close to zero, although not zero. For example, the pulse width of the drive current is reduced to bring the heat output of the heater 6 closer to zero, or the number of pulses per unit time is reduced to bring the heat output of the heater 6 closer to zero.

When the adjustment amount of the slide knob 40 is rapid adjustment and the adjustment amount is equal to or greater than a preset value, the normal control is shifted to the correction control. The output voltage of the variable resistor 39 adjusted by the slide knob 40 varies in the range of 2V (100%) to 0V (0%). Based on this, the output voltage of the variable resistor 39 changes by 1.0 V (50%) or more, and the adjustment speed of the slide knob 40, that is, the adjustment speed of the variable resistor 39 is a rapid adjustment. In addition, necessary correction control is performed. Specifically, when the voltage change amount per unit time changes by 5% per 0.1 second, the control unit 29 determines that the adjustment is a rapid adjustment, and further a rapid decrease adjustment or a rapid increase adjustment. Is determined and necessary correction control is performed. For example, when the output voltage of the variable resistor 39 is 1.9V, when the slide knob 40 is rapidly adjusted and the output voltage is reduced to 0.8V, the control unit 29 is rapidly adjusted. Then, it is determined that the adjustment is in the decreasing direction, and the normal control is shifted to the correction control. As described above, the control unit 29 satisfies the quick adjustment and that the adjustment amount is equal to or larger than the set value, and further determines the adjustment direction (increase / decrease direction) and determines whether or not to shift to the correction control. judge.
The adjustment stroke of the controller 12 and the change amount of the output voltage of the variable resistor 39 are in a proportional relationship. Therefore, “the adjustment stroke of the controller 12” can be read as “the amount of change in the output voltage of the variable resistor 39”.

  On the contrary, as shown in the right half of FIG. 10, when the adjustment amount of the slide knob 40 is a rapid increase adjustment exceeding 50% of the adjustment stroke (YES in step S6 of FIG. 1), the motor Since the driving rotational speed of No. 5 increases rapidly, the amount of air blown by the blower fan 4 increases rapidly, and the temperature of the heater 6 may fall into an undershoot (excessive decrease). In order to avoid this, when the adjustment amount of the slide knob 40 exceeds 50% of the adjustment stroke, the control unit 29 shifts from the normal control to the correction control (step S7 in FIG. 1), and the heat output of the heater 6 is changed. The output is maximized (step S21 in FIG. 12), and after a predetermined time T2 (0.55 seconds) has elapsed, the control returns to the normal state control (YES in step S23 in FIG. 12). The control unit 29 for maximizing the heat output of the heater 6 sets the drive current supplied to the heater 6 to Hi. Alternatively, the pulse width of the drive current supplied to the heater 6 and the number of pulses per unit time are increased. Specifically, when the heat output of the heater 6 is maximized, the supply of the drive current is set to the Hi state to maximize the heat output of the heater 6. Alternatively, the supply of the drive current is set to a value close to the maximum, and the heat output of the heater 6 is not maximum but is close to the maximum. For example, the pulse width of the drive current is increased to bring the heat output of the heater 6 closer to the Hi state, or the number of pulses per unit time is increased to bring the heat output of the heater 6 closer to the maximum.

  As described above, correction control is performed when the slide knob 40 is adjusted to rapidly decrease or rapidly increase, and further, the driving time T1 of the heater 6 in the case of rapid decrease adjustment and the case of rapid increase adjustment. When the driving time T2 of the heater 6 is set so as to satisfy the inequality (T1> T2), the heater 6 is reliably prevented from falling into an overshoot or undershoot, and the hot air temperature relative to the target temperature is prevented. Variation width can be reduced.

  The adjustment direction of the variable resistor 39 by the slide knob 40 is originally selected from an arbitrary adjustment position to either the upper side (increasing side) or the lower side (decreasing side). However, the slide knob 40 may be adjusted to rapidly increase within a predetermined time T1 after the slide knob 40 is adjusted to rapidly decrease due to a user operation mistake or misunderstanding (YES in step S15 in FIG. 11). In such a case, as shown in FIG. 13, when the adjustment amount of the slide knob 40 during the rapid decrease adjustment exceeds 50% of the adjustment stroke, the control unit 29 shifts from the normal control to the correction control. When the increase adjustment is confirmed, the control unit 29 leaves the correction control and returns to the normal control (step S14 in FIG. 11), and returns the heat output of the heater 6 to the normal control state. Similarly, when the slide knob 40 is adjusted for rapid increase and then rapidly decreased and increased within a certain time T2 (YES in step S25 in FIG. 12), the adjustment amount of the slide knob 40 during the rapid increase adjustment is adjusted. When the control unit 29 shifts from the normal control to the correction control when 50% of the stroke is exceeded, the control unit 29 leaves the correction control and returns to the normal control when the rapid decrease adjustment is confirmed. 6 is returned to the state of normal control.

(Cold air mode)
When the hair dryer is operated in the normal control state of an arbitrary operation mode, when the cold air switch 13 is turned on, as shown in FIG. 6 and FIG. The dry air is sent out from the outlet. Thereafter, when the cold air switch 13 is turned off (on again), the control unit 29 shifts to correction control and drives the heater 6 for a predetermined time T3 (0.75 seconds) with the maximum heat output. After that, the process shifts to normal control, adjusts the heat output of the heater 6 based on the detection signal of the temperature sensor 25, and returns to the warm air mode immediately before switching to the cold air mode. For example, when the hot air mode immediately before switching to the cold air mode is the second mode, the operation state of the motor 5 and the heater 6 is controlled by returning to the control mode of the second mode.

  As described above, when the cold air switch 13 is turned off to return from the cold air mode to the hot air mode, when the control proceeds to the correction control, the heat output of the heater 6 is maximized and driven for a predetermined time T3, The time to return to the target temperature by making the rise of the abrupt rise can be shortened. The relationship between the heater driving time T3 in the correction control and the predetermined times T1 and T2 in the correction control described above is set so as to satisfy the inequality (T1> T3> T2). For example, when T3 = <T2, the amount of heat generation is insufficient by the amount of time the heater 6 is driven, and the time until the hot air temperature reaches the target temperature when returning to the hot air mode is prolonged. End up. In order to make up for such a lack of heat generation, T3> T2. In addition, when using a hair dryer, the suction inlet 52 is covered with a towel, a futon, etc., and a warm air temperature may become abnormally high up to 120 degreeC, for example. In such a case, the control unit 29 that has received the output signal of the temperature sensor 25 immediately stops the operation of the motor 5 and the heater 6, and lights the LEDs 31 to 34 for displaying the hot air mode and the LED 35 for displaying the cold air mode. Or flash to inform the user that the hair dryer has stopped in an abnormal condition. This abnormal display state can be canceled by turning off the main switch 11, and when the main switch 11 is turned on again, the hair dryer can be operated normally. In addition, a display body (LED) for display may be provided separately, and the display body may be turned on or blinked to notify the user that the hair dryer is stopped in an abnormal state.

(Embodiment 2) In the above embodiment 1, when the drive rotational speed of the motor 5 is adjusted to be large or small according to the adjustment signal of the controller 12, the heat output of the heater 6 is automatically based on the detection signal of the temperature sensor 25. The warm air temperature can be maintained at the target temperature by adjusting the increase and decrease. However, it is possible to adjust the heat output of the heater 6 in accordance with the adjustment signal from the controller 12 to increase or decrease the hot air temperature. In that case, when the heat output of the heater 6 is adjusted to be large or small according to the adjustment signal of the controller 12, the control unit 29 automatically increases or decreases the drive rotational speed of the motor 5 based on the detection signal of the temperature sensor 25. Thus, the hot air temperature can be maintained at the target temperature. In other words, the second embodiment is different from the first embodiment in that the heat output of the heater 6 is adjusted by the controller 12 and the drive rotational speed of the motor 5 is controlled based on the detection signal of the temperature sensor 25. Is the same. Further, in the second embodiment, regarding the control content of the control unit 29, in the description of the control content described in the first embodiment, the driving rotation of the motor 5 and the heat output of the heater 6 may be read, and the description thereof is omitted.

  The hair dryer in Example 2 can be implemented in the following embodiments. The main body case 1 has a blower fan 4, a motor 5 that rotationally drives the fan 4, a heater 6 that heats air supplied from the blower fan 4, and a control unit 29 that controls the operating state of the motor 5 and the heater 6. This is a hair dryer. The control unit 29 receives the detection signal of the temperature sensor 25 that detects the temperature of the hot air heated by the heater 6 and the adjustment signal of the controller 12 that adjusts the heat output of the heater 6. Control the driving state. Further, the controller 29 is configured to adjust the heat output of the heater 6 in accordance with the adjustment signal output from the controller 12 in the operating state in which the motor 5 and the heater 6 are driven, thereby adjusting the warm air temperature. It is. In a state where the heat output of the heater 6 changes, the control unit 29 automatically adjusts the drive rotation speed of the motor 5 based on the detection signal of the temperature sensor 25 to keep the hot air temperature constant. It is characterized by being.

  According to the hair dryer provided with the control unit 29 as described above, the hot air temperature of the hair dryer is automatically adjusted regardless of the environmental temperature, and the air volume and temperature temperature suitable for a plurality of hair treatment states are adjusted. Can supply wind. Further, even when the user operates the controller 12 to adjust the air blowing temperature to a desired temperature, the control unit 29 automatically increases or decreases the drive rotational speed of the motor 5 based on the detection signal of the temperature sensor 25. In addition, since the warm air temperature can be kept constant, the hair treatment can be performed accurately while always supplying the warm air at an appropriate temperature.

  Depending on the difference in the adjustment speed of the controller 12 by the user, there are a slow adjustment in which the adjustment speed of the adjustment signal is lower than a predetermined value and a quick adjustment in which the adjustment speed of the adjustment signal is higher than the predetermined value. When the adjustment state of the controller 12 is a slow speed adjustment, the control unit 29 performs a normal control for adjusting the driving rotational speed of the motor 5 based on the detection signal of the temperature sensor 25 to keep the hot air temperature constant. It is configured to hold. In addition, when the adjustment state of the controller 12 is rapid adjustment, the control unit 29 shifts to the preset correction control until the predetermined time elapses after the control unit 29 leaves the normal control, and the temperature is changed. The wind temperature is corrected, and after a predetermined time has elapsed, the control returns to the normal state control so that the warm air temperature is kept constant.

  As described above, when the controller 12 is adjusted at a slow speed, the normal control is performed because the change range of the heat output of the heater 6 due to the slow speed adjustment is small and the motor 6 follows the adjusting operation of the heater 6 reliably. This is because the drive rotational speed of 5 can be accurately controlled by normal control. In addition, when correction control is performed when the adjustment state of the controller 12 is rapid adjustment, the driving rotational speed of the motor 5 is appropriately controlled in a state commensurate with the adjustment operation of the heater 6, and the temperature supplied from the hair dryer is adjusted. This is because the temperature of the wind can be brought close to the target temperature to keep the warm air temperature constant. In addition, when normal control is continued when the controller 12 is rapidly adjusted, the rotational speed of the motor 5 cannot be quickly controlled following the adjustment operation of the controller 12, and the warm air supplied from the hair dryer The temperature of will greatly deviate from the target temperature.

  When the controller 12 is adjusted from an arbitrary adjustment position to a side where the heat output of the heater 6 decreases, if the adjustment state of the controller 12 is a rapid decrease adjustment, the control unit 29 shifts to correction control, and the motor 12 The drive rotational speed of 5 is minimized so that the control returns to the normal state after a predetermined time T1 has elapsed.

  As described above, when the adjustment state of the controller 12 is the rapid decrease adjustment, when the control unit 29 shifts to the correction control and minimizes the drive rotational speed of the motor 5 and drives it for a predetermined time T1, the heater 6 The driving speed of the motor 5 can be reduced in response to a rapid decrease in heat output. Thereby, it can prevent that the heater 6 falls into an undershoot. Moreover, after the correction control is started and a predetermined time T1 has elapsed, the control returns to the normal control, and the hot air temperature supplied from the hair dryer is kept constant.

  When the adjustment amount of the controller 12 is a rapid decrease adjustment of 50% or more of the adjustment stroke of the controller 12, the control unit 29 shifts from normal control to correction control, and returns to normal control after a predetermined time T1 has elapsed. To be configured.

  As described above, when the adjustment amount of the controller 12 is a rapid decrease adjustment of 50% or more of the adjustment stroke of the controller 12, the control unit 29 shifts from the normal control to the correction control, and the drive rotational speed of the motor 5 is changed. When minimized, it is possible to eliminate the unnecessary large adjustment of the drive rotation of the motor 5. For example, when the adjustment amount of the controller 12 is 30% of the adjustment stroke of the controller 12, if correction control is performed to minimize the drive rotation of the motor 5, the control for correction becomes excessive and the control result Greatly varies from the target temperature. As a result, it takes time for the hot air temperature supplied from the hair dryer to reach the target temperature. The control unit 29 returns to the normal control after a predetermined time T1 has elapsed from the start of the correction control, and keeps the warm air temperature supplied from the hair dryer constant.

  When the controller 12 is adjusted from an arbitrary adjustment position to the side where the heat output of the heater 6 increases, when the adjustment state of the controller 12 is a rapid increase adjustment, the control unit 29 shifts to correction control and the motor 5 The drive rotational speed is maximized, and after a predetermined time T2 has elapsed, the control returns to normal control.

  As described above, when the adjustment state of the controller 12 is the rapid increase adjustment, when the control unit 29 shifts to the correction control and maximizes the drive rotational speed of the motor 5 and drives it for a predetermined time T2, the heater 6 The drive rotational speed of the motor 5 can be increased in response to a rapid increase in heat output. Thereby, it can prevent that the heater 6 falls into an overshoot. Moreover, after the correction control is started and a predetermined time T2 has elapsed, the control returns to the normal control, and the hot air temperature supplied from the hair dryer is kept constant.

  When the adjustment amount of the controller 12 is a rapid increase adjustment exceeding 50% of the adjustment stroke of the controller 12, the control unit 29 shifts to the correction control and returns to the normal control after a predetermined time T2 has elapsed. Configure.

  As described above, when the adjustment amount of the controller 12 is a rapid increase adjustment that is 50% or more of the adjustment stroke of the controller 12, the control unit 29 shifts from the normal control to the correction control, and the drive rotational speed of the motor 5 is reduced. When maximized, it is possible to eliminate an unnecessary large adjustment of the driving speed of the motor 5. For example, if the adjustment amount per unit time of the controller 12 is 20% of the adjustment stroke of the controller 12, if the correction control is performed to maximize the driving speed of the motor 5, the control for the correction becomes excessive. Thus, the control result varies greatly from the target temperature. As a result, it takes time for the hot air temperature supplied from the hair dryer to reach the target temperature. The control unit 29 returns to the normal control after a predetermined time T2 has elapsed from the start of the correction control, and keeps the hot air temperature supplied from the hair dryer constant.

  When the controller 12 is adjusted from an arbitrary adjustment position to a side where the heat output of the heater 6 decreases, if the adjustment state of the controller 12 is a rapid decrease adjustment, the control unit 29 shifts to correction control, and the motor 12 The drive rotational speed of 5 is minimized so that the control returns to the normal state after a predetermined time T1 has elapsed. When the controller 12 is adjusted from an arbitrary adjustment position to the side where the heat output of the heater 6 increases, if the adjustment state of the controller 12 is a rapid increase adjustment, the control unit 29 shifts to correction control, and the motor 12 5 is maximized, and after a predetermined time T2 has elapsed, the control returns to the normal state.

  As described above, when the controller 12 is adjusted to rapidly decrease, the control unit 29 shifts to correction control to minimize the driving speed of the motor 5, and when the controller 12 is adjusted to increase rapidly, the control unit 29 corrects. Shifting to control, the drive rotational speed of the motor 5 was maximized. According to such a control mode, it is possible to optimize the drive rotation speed of the motor 5 in response to all the rapid adjustment operations by the controller 12 and to keep the hot air temperature supplied from the hair dryer constant.

  The drive time T1 of the motor 5 when the adjustment state of the controller 12 is a rapid decrease adjustment and the drive time T2 of the motor 5 when the adjustment state of the controller 12 is a rapid increase adjustment satisfy the inequality (T1 <T2). Set to

  As described above, the driving time T1 of the motor 5 when the controller 12 is adjusted to rapidly decrease and the driving time T2 of the motor 5 when the controller 12 is adjusted to rapidly increase satisfy the inequality (T1 <T2). The reason for this is as follows. When the controller 12 is adjusted to increase rapidly, the heat output of the heater 6 increases rapidly. Therefore, by increasing the driving time T2 of the motor 5, the temperature of the hot air supplied from the hot air dryer can be brought closer to the target temperature in a shorter time. Accordingly, the relationship between the time T1 and the time T2 may be (T1 <T2).

  If the controller 12 is adjusted to rapidly increase within the predetermined time T1 after the controller 12 is adjusted to rapidly decrease, the control unit 29 is configured to control the drive rotation speed of the motor 5 based on normal control.

  As described above, when the controller 12 is adjusted to rapidly increase within the predetermined time T1 after the controller 12 is adjusted to rapidly decrease, the control unit 29 controls the drive rotation speed of the motor 5 based on the normal state control. For the following reason. In a state in which the controller 12 is adjusted to rapidly decrease, the control unit 29 temporarily switches to correction control and minimizes the driving rotational speed of the motor 5. However, if the controller 12 is adjusted to increase rapidly before the predetermined time T1 elapses after switching to the correction control, the drive rotation of the motor 5 is completed before the correction control for minimizing the drive rotation speed of the motor 5 is completed. It is necessary to perform correction control in the direction in which the number increases. In such a case, since the drive rotational speed of the motor 5 is maximized, the heater 6 tends to fall into an undershoot state. In order to prevent such a malfunction, the control unit 29 performs normal control based on the detection signal of the temperature sensor 25 without maximizing the driving rotation speed of the motor 5.

  After the controller 12 is adjusted to increase rapidly, when the controller 12 is adjusted to decrease rapidly within a predetermined time T2, the control unit 29 is configured to control the drive rotation speed of the motor 5 based on normal control.

  As described above, when the controller 12 is adjusted to rapidly increase within the predetermined time T2 after the controller 12 is adjusted to increase rapidly, the control unit 29 controls the drive speed of the motor 5 based on the normal control. For the following reason. In a state in which the controller 12 is adjusted to increase rapidly, the control unit 29 once switches to correction control to maximize the drive rotational speed of the motor 5. However, if the controller 12 is adjusted to rapidly decrease before the predetermined time T2 elapses after switching to the correction control, the drive rotation speed of the motor 5 is increased before the correction control in which the drive rotation speed of the motor 5 is increased. Therefore, it is necessary to carry out correction control in such a direction that decreases. In such a case, since the driving rotational speed of the motor 5 is minimized, the heater 6 tends to fall into an overshoot state. In order to prevent such a problem, the control unit 29 performs normal control based on the detection signal of the temperature sensor 25 without minimizing the driving rotational speed of the motor 5.

  In the above embodiment, the controller 12 is configured by using the slide type variable resistor 39, but this is not necessary, and the controller 12 may be configured by using a dial type variable resistor. In the above-described embodiment, the case where the blower fan 4 is an axial flow type fan has been described, but this is not necessary, and the blower fan 4 may be a turbo fan or a sirocco fan. The hair dryer is not necessarily a hand-held hair dryer, but may be a stationary hair dryer. The hot air dryer is a concept including, in addition to a hair dryer, a foot dryer, a finger dryer, a nail dryer, an animal dryer, and the like.

  In the correction control according to the first embodiment, the control state is forcibly changed from the normal control state to the preset minimum output value or a set value close thereto at the time of rapid decrease adjustment, but this is not necessary. For example, the preset minimum output may be set to half the heat output of the Hi state. That is, minimizing output is to reduce the heat output to a preset minimum heat output set value or a set value close thereto, and is not necessarily limited to zero or a value close thereto. Similarly, the control state is forcibly changed from the normal control state to the preset maximum output value or a set value close to it in the normal control state during the rapid increase adjustment, but this is not necessary. For example, the preset minimum output may be set to half the heat output of the Hi state. In other words, minimizing output is to increase the heat output to a preset maximum heat output set value or a set value close thereto, and is not necessarily limited to the Hi state or a value close thereto. .

DESCRIPTION OF SYMBOLS 1 Main body case 3 Handle 4 Blower fan 5 Motor 6 Heater 9 Mode changeover switch 10 Display unit 11 Main switch 12 Controller 13 Cold air switch 22 Heater board 23 Heater wire 25 Temperature sensor 29 Control part 31-34 Hot air mode display body (LED)
35 Cold air mode indicator (LED)
39 Variable resistor 40 Slide knob

Claims (5)

The main body case (1) is provided with a blower fan (4), a motor (5) for rotationally driving the fan (4), and a heater (6) for heating the air supplied from the blower fan (4). A hot air dryer,
The operation mode of the hot air dryer includes a hot air mode in which the motor (5) and the heater (6) are driven to supply hot air, and a cold air mode in which only the motor (5) is driven to supply cold air. Has
On the outer surface of the main body case (1), there are provided a hot air mode display body (31 to 34) for displaying light emission in the warm air mode and a cold air mode display body (35) for displaying light emission in the cold air mode,
The hot air mode has multiple hot air modes with different hot air temperatures,
A plurality of hot air mode display bodies (31 to 34) are provided corresponding to each hot air mode,
The mode switch (9) can switch between multiple hot air modes,
In a plurality of hot air modes, when the cold air switch (13) is turned on, it is configured to switch to the cold air mode,
A hot air dryer characterized in that it can be switched to the hot air mode when the cold air switch (13) is turned on or the mode changeover switch (9) is turned on in the cold air mode.   The mode changeover switch (9) and the cold air switch (13) for switching the hot air dryer operated in the hot air mode to the cold air mode are separated from the case structure comprising the main body case (1) and the handle (3). The hot air dryer according to claim 1, wherein the hot air dryer is disposed in the air dryer.   A hot air mode indicator (31-34), a cool air mode indicator (35), and a mode changeover switch (9) are arranged on the main body case (1), and a cold air switch (13) is arranged on the handle (3). The hot air dryer according to claim 2, wherein   The hot air dryer according to claim 1, 2 or 3, wherein a plurality of hot air mode display bodies (31 to 34) and a cold air mode display body (35) are arranged in a straight line.   A cold air mode display body (35) is arranged between the hot air mode display body (31 to 34) and the mode changeover switch (9), and the hot air mode display body (31 to 34) and the cold air mode display body (35). And the mode changeover switch (9) are arranged in a straight line.

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